Unlock instant, AI-driven research and patent intelligence for your innovation.

Sounder Module

A sound generator and module technology, applied in the direction of speaker screen, speaker transducer fixation, sensor, etc., can solve the problems of vibration system polarization intensification, large sound pressure release, asymmetric distribution of sound field, etc., to reduce harmonic distortion , Improve harmonic distortion and reduce the effect of system polarization

Active Publication Date: 2018-09-07
GOERTEK INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to meet the structural design of the overall system, some sound generator modules often have a raised upper sound port design, that is, the sound outlet channel is longer, and its port is higher than the outer surface of the shell; The requirements of system assembly often cannot make it located in the center of the vibration system
This kind of asymmetric riser-type sound outlet will lead to asymmetric distribution of the sound field of the front acoustic cavity of the sound generator module, the sound pressure release at the sound outlet is relatively large, the sound field energy at the sound outlet is relatively concentrated, and the sound energy is relatively concentrated The reaction force of the area to the vibration system is greater, resulting in an asymmetric distribution of sound pressure on the diaphragm surface, such as Figure 5 shown
The asymmetrically set sound outlet will lead to asymmetric distribution of the acoustic load force on the surface of the diaphragm, which will directly lead to increased polarization of the vibration system and increased harmonic distortion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sounder Module
  • Sounder Module
  • Sounder Module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a sounder module includes a casing, and the casing is composed of an upper casing 10 and a lower casing 20 combined together, and a vibration system and a magnetic circuit system are accommodated in the space enclosed by the upper casing 10 and the lower casing 20 . The vibration system includes a diaphragm 30 whose edge is fixed between the upper case 10 and the lower case 20, a spherical top 32a is fixed in the middle of one side of the diaphragm 30 close to the upper case 10, and a voice coil is fixed on the other side of the diaphragm 30. 34. The magnetic circuit system includes a pot frame 40 fixed on the inner side of the lower shell 20, a magnet 42 and a washer 44 are fixed in the center of the inner side of the pot frame 40 in turn, and a magnetic gap is provided between the magnet 42, the washer 44 and the side wall of the pot frame 40 , the end of the voice coil 34 is located in the magnetic gap. The voice coil 34 reciprocates up ...

Embodiment 2

[0033] This embodiment is basically the same as Embodiment 1, the difference is that:

[0034] Such as image 3 and Figure 4 Commonly shown, the position corresponding to the orthographic projection area of ​​the sound outlet 12 on the dome 32b is provided with a pressure regulating portion 320b, the pressure regulating portion 320b includes a central portion 322 of a planar structure, and the periphery of the central portion 322 is connected to the dome through a connecting portion 324. The other parts of 32b are joined together, and the connection part 324 is an approximately tapered annular slope structure.

[0035] The structure of the pressure regulating part is not limited to the structure described in the above two embodiments, it can also be a wave surface structure with a depression in the middle, as long as it can play the role of balancing the sound pressure of the front acoustic cavity.

[0036] In the present invention, the spherical dome is arranged as an asym...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a sounder module, which relates to the technical field of electro-acoustic products, and comprises a housing, wherein a vibration system and a magnetic circuit system are accommodated in the housing, and a sound outlet is provided on the housing corresponding to the position of the vibration system , the sound outlet is set away from the center of the vibration system, and the sound outlet is a rising port higher than the surface of the housing; the vibration system includes a diaphragm, and the diaphragm is close to the sound outlet The middle part of the mouth side is provided with a spherical top, and a pressure regulating part is provided on the spherical top corresponding to the orthographic projection area of ​​the sound outlet, and the pressure regulating part is higher than other parts of the spherical top and emits sound toward the sound outlet. The direction of the mouth is convex. The sounder module of the present invention solves the technical problem of the asymmetry of the sound field distribution in the front acoustic chamber of the sounder module in the prior art. Balanced with the rest, it effectively reduces system polarization and reduces harmonic distortion.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a sounder module. Background technique [0002] The sounder module is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signals and sound signals, and is an energy conversion device. Existing sounder modules usually include a housing in which a vibration system and a magnetic circuit system are accommodated. The position corresponding to the vibration system on the housing is provided with a sound outlet of the sounder module. Usually, the sound outlet corresponds to the center of the vibration system. The position is set, and the port of the sound outlet will be flush with the outer surface of the housing. However, in order to meet the structural design of the overall system, some sound generator modules often have a raised upper sound port design, that is, the sound outlet channel is l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/02
CPCH04R1/2811H04R1/023H04R1/025H04R1/2888H04R7/127H04R9/025H04R31/00
Inventor 祖峰磊郭晓冬
Owner GOERTEK INC